Improvement in metallic pipe or tubing



UNrrEn STATES PATENT OFEIGE.

PETER NAYLOR, O13 NEW YORK, N. Y.

lMPR OvEMENT IN METALLIC PlPE OR TUBING.

Specification forming part of Letters Patent No. 122,482, dated January 2, 1872.

proportions substantially as hereinatter described.

I take. in the one hundred'parts, from ninety'five to ninety-nine'of lead, and from five to one of antimony, and I then melt and thoroughly mix them together. I may at times increase the proportion of antimony-say one or two per cent, or even as high as ten of anti- ,mony to ninety of lead--to meet special cases or I may at other times diminish the per centage. But for ordinary uses it will be found sufficient to make the alloy in the proportions first named. The pipe from this alloy is made in any of the known modes of making tubing, as, for instance, by hydraulic pressure, by

pressing the metal out of a cylinder through a die, as in making lead pipe.

The advantages possessed by this tubing are many. The pipe is about twice as strong as common lead pipe, and can therefore be reduced in weight about 0ne-ha1f the weight of lead pipe. This renders it much'cheaper than lead pipe by the running foot. With this increased strengh it retains great pliability, and can be worked in a similar mannerto lead. As the metal is also harder and brighter than lead, better work can be executed in plumb-.

ing houses, &c., by its use.

I am aware that it has been proposed to use lead and antimony in combination, and that type-metal, usually mixed with other ingredients, has been made of such a composition; but'I am not aware that pipe or tubing has ever before been made of lead and antimony,

as specified, and possessing the characteristics of the tubing above described.

Other ingredients in small quantity might be combined with the lead and antimony without essentially afl'ecting the alloy or changing its characteristics; and, therefore,

What I claim, and desire to secure by Letters Patent, is-- Metallic pipe or tubing, composed in the.

main or entirely of lead and antimony, in the proportions substantially as herein specified.

In testimony whereof I have signed my name to this specification before two subscribing witnesses.

PETER NAYLOR.

.Witnesses:

GEO; G. FISH,

B. HAX'IUN. (163) 

